Finding the Fourth Proportional to 90,639.95, 135,959.97 and 34,467.09
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Solution
The fourth proportional to 90,639.95, 135,959.97 and 34,467.09 is: 51,700.65
Step by Step Solution
- Step 1: Write the proportion equation
90,639.95 : 135,959.97 = 34,467.09 : x - Step 2: Convert to fraction form
90,639.95/135,959.97 = 34,467.09/x - Step 3: Cross multiply
90,639.95x = 135,959.97 × 34,467.09 - Step 4: Simplify right side
90,639.95x = 4,686,144,522.39 - Step 5: Solve for x
x = 4,686,144,522.39/90,639.95 - Step 6: Final answer
x = 51,700.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.